Why is my refrigerator not cooling or not working at all?
Check that the power plug is properly connected and verify the set temperature on the digital display is not warmer than the actual inner temperature. Also check whether the refrigerator is in direct sunlight, near a heat source, or has its back too close to the wall preventing proper ventilation. If needed, set the refrigerator to a colder temperature. (Page 7)
From the official Samsung Rf4287hars manual, page 7
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